In an average year n a tropical rain forest,the climate is very humid because of all the rainfall,which amounts to about 250cm per year.The rain forest has lots of rain because it is hot and wet.This climate is found near the equator.That means that there is more direct sunlight hitting the land and sea there than anywhere else.The sun warms the land and sea and the water evaporates into the air.The warm air can hold a lot of water vapor.A the air rises,it cools.That means it can hold less water vapor.

The annual precipitation of a rain forest is greater than 150 cm.In only a month the rain forest receives 4 inches of rain.The rain forest is different from a lot of other climates.In other climates,the evaporation is carried away to fall as rain in far off areas,but in the rainforest,50% of the precipitation comes from it's own evaporation.